Chemical assembly of pyrenyl groups on silica surface and application of a modified sorbent for chromatographic separation of light fullerenes

Chemical assembly of pyrenyl groups on silica surface and application of a modified sorbent for...
Postnov, V.; Naumysheva, E.; Litvinov, A.; Krokhina, O.
2015-07-14 00:00:00
Procedure for modifying the silica gel surface with pyrenyl groups, based on a chemical assembly of surface compounds, was developed. The procedure includes successive treatments of silica with (2-phenylethyl) trichlorosilane, water, chloromethyl methyl ether, and pyrene. The reaction conditions providing the maximum content of grafted pyrenyl groups were determined. The possibility of using the resulting modified silica gel as a sorbent in chromatographic separation of C60 and C70 fullerenes was examined and its high efficiency in obtaining pure C70 fullerenes was demonstrated.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngRussian Journal of Applied ChemistrySpringer Journalshttp://www.deepdyve.com/lp/springer-journals/chemical-assembly-of-pyrenyl-groups-on-silica-surface-and-application-vgcK1li0Lc

Chemical assembly of pyrenyl groups on silica surface and application of a modified sorbent for chromatographic separation of light fullerenes

Abstract

Procedure for modifying the silica gel surface with pyrenyl groups, based on a chemical assembly of surface compounds, was developed. The procedure includes successive treatments of silica with (2-phenylethyl) trichlorosilane, water, chloromethyl methyl ether, and pyrene. The reaction conditions providing the maximum content of grafted pyrenyl groups were determined. The possibility of using the resulting modified silica gel as a sorbent in chromatographic separation of C60 and C70 fullerenes was examined and its high efficiency in obtaining pure C70 fullerenes was demonstrated.